When President Obama advocates for raising the country's minimum wage during a speech at the University of Michigan on Wednesday, he will be the only president to visit the Ann Arbor campus more than once while in office, according to U-M officials.

The April 2 speech is Obama's third visit to U-M since becoming president in 2008.

Other presidents, such as U-M alumnus Gerald Ford and Jimmy Carter, visited Ann Arbor multiple times, but only visited once while serving as president.

Obama came in May 2010 to give a graduation speech and in January 2012 to give a speech on college affordability.

This most recent speech will be held in the gymnasium of U-M's Intramural Sports Building and begin at 2:30 p.m. Wednesday.

Last week U-M officials said the president's staff was exploring campus sites for his speech, which is expected to rally support for raising the federal minimum wage from $7.25 an hour to $10.10 an hour. The speech is open to the media, a few selected guests and a limited number of ticketed students.

Presidential visits to U-M date back to 1892, when Grover Cleveland, who was in-between two terms in the White House at the time, attended a U-M luncheon in February of that year. At least 13 presidents have visited the Ann Arbor campus, although many visited campus when they were not in office.

For example, John F. Kennedy visited U-M during his presidential campaign and announced his idea for the U.S. Peace Corps. Bill Clinton gave a graduation speech at U-M after he left office.

The last sitting president to visit U-M was George H.W. Bush, who gave a spring commencement address in May 1991.